Printing is actually a color reproduction process. In the process of reproduction, there will always be deviation. This deviation is called color difference! Due to the different varieties of each ink (such as environmental protection ink, UV ink, quick drying ink, etc.), manufacturers and raw materials, there are differences in the ink of different manufacturers. Therefore, when turning the sheet for printing, it is best to find the previous printing manufacturer for printing. Generally, the regular manufacturers will not easily replace the ink.

大家也許都聽過印刷廠對于色差的解釋，是說印刷品的標準是±10%是合格的，那么±10%的色差有多大呢，我們來做個比對就知道了，如果用三原色來做底色，色差是完全可以接受的。

You may have heard the explanation of the printing factory for the color difference, which means that the standard of Chinese printed matter is ± 10% qualified, so how big is the color difference of ± 10%. Let's make a comparison. If the three primary colors are used as the background color, the color difference is completely acceptable.

但是將兩種三原色混合在一的話你會發(fā)現(xiàn)，深藍色的色差大，只要紅色油墨只要減少一點，顏色就偏冷，藍色油墨減少一點，顏色就偏暖，這種是難的，因為每種油墨不論何種廠牌實際上均有不同的色偏現(xiàn)象，一般“青色（C）”均略帶洋紅而偏藍，“洋紅（M）”一般同時帶青與黃而偏紫，只有“黃色（Y）”僅略帶微量洋紅而略微偏橙，所以要批量印出電腦顯示屏上的深藍色，是很難的。

However, if you mix the two three primary colors in one, you will find that the color difference of dark blue is the largest. As long as the red ink is reduced a little, the color will be cold, and the blue ink is reduced a little, the color will be warm. This is the most difficult to solve, because each ink, regardless of the brand, actually has different color deviation phenomena. Generally, "cyan (c)" is slightly magenta and blue, "magenta" (M) "Generally, it is purple with blue and yellow at the same time, and only" yellow (y) "is only slightly magenta and slightly orange, so it is difficult to print the dark blue on the computer display screen in batches.

有比深藍色更難印的顏色嗎？

Is there a color harder to print than dark blue?

當然有，那就是紫色。

Of course, that's purple.

印刷師傅看到底色是純紫色的話，他想死的心都有，這不是開玩笑，無論是深紫色。

If the printer sees that the background color is pure purple, he wants to die. This is no joke, whether it is dark purple.

還是淺紫色。

Or light purple.

顏色偏差不是一點點，還有咖啡色。

The color deviation is not a little, but also coffee.

你以為這已經(jīng)是偏色厲害的？

You think this is the worst color bias?

不，還有一個是公認不可能可以印出來的顏色，哪就是4色灰。

No, there is another color that is recognized as impossible to print, which is 4-color gray.

由于4色灰可以出現(xiàn)的顏色實在太多，濟南印刷廠只顯示幾個明顯的讓大家感受一下。

Because there are too many colors that can appear in 4-color gray, t only shows a few obvious ones for everyone to feel.

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